Time in Grid-Oriented VPLs: Just Another Dimension?. - Margaret M. Burnett; Nanyu Cao; John W. Atwood Jr. (VL, 2000)

End-User Programming of Time as an 'Ordinary' Dimension in Grid-Oriented Visual Programming Languages. - Margaret M. Burnett; Nanyu Cao; Miguel Arredondo-Castro; John Atwood (J. Vis. Lang. Comput., 2002)